VR-500 O
PERATING
M
ANUAL
28
If you have to be away from your radio for a while, the Band Scope allows viewing of
operating activity on channels above or below the current operating channel (in the VFO
mode).
The display will indicate the relative signal strengths of
signals on channels immediately adjacent to the current
operating frequency. A convenient “Channel marker” can
then be used to zero in on one of the stations displayed;
when you turn off the Band Scope, the VR-500 will be
set to the frequency set by the Channel Marker.
While the Band Scope is engaged, reception is not possible, as the incoming RF energy is
diverted to the Band Scope.
Two basic operating modes for Band Scope are available:
“
A
” Mode:
Sweep range is selectable (300 kHz or 600 kHz),
Sweep steps are selectable (9/10/12.5/20/25/50 or 100 kHz).
Therefore, the Sweeping channels are flexible (e.g. 3 channels @ [Sweeping range: 300 kHz, Sweeping
step: 100 kHz] + 60 channels @ [Sweeping range: 600 kHz, Sweeping step: 10 kHz]).
Band Scope
9 kHz
10 kHz
12.5 kHz
20 kHz
25 kHz
50 kHz
100 kHz
540 kHz
9 kHz
10 kHz
12.5 kHz
20 kHz
25 kHz
50 kHz
100 kHz
Range
Step
600 kHz
60
60
48
30
24
12
6
Channels
270 kHz
Range
Step
300 kHz
30
30
24
15
12
6
3
Channels
“
B
” Mode:
Sweeping channel capacity is fixed (60 channels),
Sweeping Steps are selectable (50/100/1k/5k/6.25k/9k/10k/12.5k/15k/20k/25k/30k/50k or 100 kHz).
Therefore, the Sweeping range is flexible (e.g. 3 kHz @ [Sweeping step: 50 Hz] + 6 MHz @
[Sweeping step: 100 kHz]).
12.5 kHz
15 kHz
20 kHz
25 kHz
30 kHz
50 kHz
100 kHz
50 Hz
100 Hz
1 kHz
5 kHz
6.25 kHz
9 kHz
10 kHz
Step
3 kHz
6 kHz
60 kHz
300 kHz
375 kHz
540 kHz
600 kHz
Range
Step
750 kHz
900 kHz
1.2 MHz
1.5 MHz
1.8 MHz
3 MHz
6 MHz
Range
While the Band Scope mode is engaged (see next section), press the
[0(MODE)]
key while
holding in the
[FUNC]
key to toggle the Band Scope mode between “
A
MODE” and “
B
MODE.”
Channel Marker
Center Frequency
Position
Center Frequency
Sweep
Range
Sweep
Step
Mode
